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Taco Boiler Reset Control

SKU:PC700-2

Brand: Taco

Taco
Qty Price
$257.95
/ each
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Specs

Application: Boiler Reset
Power Supply: 24 VAC 3VA (Powered by EXP Control)
Sensor Type: 1 Outdoor Air and 1 Supply Water
Boiler Start: 35 to 150°F
Outdoor Start: 35 to 85°F
Boiler Design Temp: 70 to 220°F
Outdoor Design Temp: -60 to 32°F
Boiler Min. Control Temp: Off
80 to 180°F
Differential:
?
Auto
2° to 42°F
Warm Weather Shutoff Temp: Off
35 F to 100 F
Voltage:
?
24v
Application: Boiler Reset
Width: 2-7/8"
Height: 4-3/4"
Amperage:
?
5
Power Method: 24V
Depth (Inches): 7/8"
Ambient Conditions: Indoor use Only: 32°-105°F < 90% RH non-condensing
Relays: 120 V (ac) 5 A 1/6 hp pilot duty 240 VA

Description for Taco PC700-2

Designed to improve performance in your hot water heating systems by regulating the supply water temperature of a single boiler based on the outdoor temperature. The control utilizes a heating curve to set the relationship between outdoor temperature and supply water temperature to provide optimum control and comfort. Thanks to its integral microprocessor, the PC700 is able to continuously adjust the boiler differential to avoid boiler short-cycling and large temperature swings, Standard functions include warm weather shut down, minimum boiler supply temperature setting, and a starting water temperature setting. A liquid crystal display clearly shows the boiler supply temperature and other monitored temperatures and settings for simple and effective control.

The PC700-2 is a microprocessor-based control designed to regulate the supply water temperature of a single boiler, based on the outdoor temperature. A wiring harness is provided to be easily connected to the Taco Expandable (-EXP) Controls.

The PC700-2 includes functions such as automatic reset ratio calculation, Warm Weather Shut Down (WWSD), Minimum Boiler setting, and an optional automatic boiler differential. The control has a digital, liquid crystal display (LCD) that normally displays the boiler supply temperature, but can display other temperatures and settings.

Taco Boiler Reset Control

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3 Questions | 6 Answers
Displaying questions 1-3
  • Taco Boiler Reset Control

    Q:

    I have a ZVC406-4 (not EXP). Would like to use with a PC700-2. Is this possible? I see what looks like a power port in the ZVC406-4, but it is covered with a clear plastic cover.
    Asked on 11/10/2013 by John from Durham, NH

    1 answer

    • VERIFIED BUYER

      A:

      You need the EXP switching relay, the switching relay you have
      does not work with the outdoor reset control.
      There is a molex connector in the EXP switching
      relay that the outdoor reset connects to.
      Good luck...

      Answered on 11/10/2013 by Anonymous
  • Taco Boiler Reset Control

    Q:

    Is this Compatible with the TACO SR 504 EXP
    Asked on 9/25/2012 by homeowner

    4 answers

    • VERIFIED BUYER

      A:

      TACO SR 504 EXP is compatible with the Taco Boiler Reset Control.

      Answered on 9/25/2012 by Anonymous
    • VERIFIED BUYER

      A:

      Yes, the PC700-2 is compatible with the SR 504 EXP. I have had a PC700-2 connected to a SR 506 EXP for nearly 3 years. Both units have been trouble free. I had to experiment with the settings on the PC700-2 to find the best balance for my installation.

      Answered on 9/25/2012 by Anonymous
    • VERIFIED BUYER

      A:

      Yes it is, there it a wiring harness included that plugs in to the the upper left of the Taco SR control. You then need to run 2 wire thermostat wire from the PC 700 to a supply sensor. Make sure it's installed on the top of the main supply pipe about 10 inches down stream of a turn, you want it on a straight section of pipe to get an accurate reading. Make sure you put a piece of pipe insulation around the sensors and pipe as well. The outdoor sensor is also 2 wire thermostat wire. Try to install it on the north face of your home and at least one foot of grade for snow drifts. Great control and easy to install, good luck.

      Answered on 9/26/2012 by Anonymous
    • VERIFIED BUYER

      A:

      The answer is Yes!!! I checked my wiring diagrams and they show the 700-2
      connects to all the Taco EXP series
      relays. There is an interface connector on the EXP board that receives the
      700-2 reset controller.
      Tessier Electric Inc.

      Answered on 9/27/2012 by Anonymous
  • Taco Boiler Reset Control

    Q:

    Can I overide the pc 700? Situations are often when I need hottern water in baseboard to heat up faster and also to kick on the kick space under the sink.
    Asked on 11/1/2010 by bill from woodstock,vermont

    1 answer

    • CUSTOMER CARE

      A:

      No, you can't override it, but you can change the settings on the control. This will boost the water temperature supplying the baseboard and in turn will provide quicker response time for your system.

      Answered on 11/2/2010 by PexSupply Staff from NY
Displaying questions 1-3

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